Development of Hydrogen-Rich Benzoxazine Resins with Low Polymerization Temperature for Space Radiation Shielding,ACS Omega

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Development of Hydrogen-Rich Benzoxazine Resins with Low Polymerization Temperature for Space Radiation Shielding
ACS Omega ( IF 3.7 ) Pub Date : 2018-09-21 00:00:00 , DOI: 10.1021/acsomega.8b01297
Daniela Iguchi ₁ , Seishi Ohashi ₁ , Ghizelle J E Abarro _{1,

2} , Xianze Yin _{1,

3} , Scott Winroth ₄ , Chris Scott ₄ , Molly Gleydura _{1,

5} , Lin Jin ₁ , Nithya Kanagasegar ₁ , Cherie Lo ₁ , Carlos Rodriguez Arza ₁ , Pablo Froimowicz _{1,

6} , Hatsuo Ishida ₁

Affiliation

A systematic study has been carried out to develop a material with significant protection properties from galactic cosmic radiation and solar energetic particles. The research focused on the development of hydrogen-rich benzoxazines, which are particularly effective for shielding against such radiation. Newly developed benzoxazine resin can be polymerized at 120 °C, which meets the low-temperature processing requirements for use with ultrahigh molecular weight polyethylene (UHMWPE) fiber, a hydrogen-rich composite reinforcement. This highly reactive benzoxazine resin also exhibits low viscosity and good shelf-life. The structure of the benzoxazine monomer is confirmed by proton nuclear magnetic resonance and Fourier transform infrared spectroscopy. Polymerization behavior and thermal properties are evaluated by differential scanning calorimetry and thermogravimetric analysis. Dynamic mechanical analysis is used to study chemorheological properties of the benzoxazine monomer, rheological properties of the cross-linked polybenzoxazine, and rheological properties of UHMWPE-reinforced polybenzoxazine composites. The theoretical radiation shielding capability of the composite is also evaluated using computer-based simulations.

中文翻译：

空间辐射屏蔽用低聚合温度富氢苯并恶嗪树脂的研制

已经进行了一项系统研究，以开发一种具有显着防护性能的材料，以免受银河宇宙辐射和太阳高能粒子的影响。该研究的重点是开发富含氢的苯并恶嗪，它对于屏蔽此类辐射特别有效。新开发的苯并恶嗪树脂可在120℃下聚合，满足与富氢复合增强材料超高分子量聚乙烯（UHMWPE）纤维一起使用的低温加工要求。这种高反应性苯并恶嗪树脂还具有低粘度和良好的保质期。通过质子核磁共振和傅里叶变换红外光谱证实了苯并恶嗪单体的结构。通过差示扫描量热法和热重分析评估聚合行为和热性能。动态力学分析用于研究苯并恶嗪单体的化学流变性能、交联聚苯并恶嗪的流变性能以及UHMWPE增强聚苯并恶嗪复合材料的流变性能。复合材料的理论辐射屏蔽能力也通过基于计算机的模拟进行了评估。

更新日期：2018-09-21

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